Metal rotary heat transfer assembly for a rotary air heat exchanger

Abstract

The invention relates to a metal rotary heat transfer assembly (1) for a rotary air heat exchanger comprising a corrugated metal strip (2) and a metal support flat strip (3) wound spirally in the circumferential direction and alternately in the radial direction on a central element (4), wherein the corrugated metal strip (2) is corrugated in the circumferential direction, and wherein in a cross-section made in a plane perpendicular to the longitudinal axis (01) of the assembly (1) said corrugated metal belt (2) comprises a set of corrugation leg portions (21) interconnected alternately by corrugation crest portions (22) and corrugation trough portions (23), and wherein a plurality of transverse through channels (5) passing through said metal rotary heat transfer assembly (1) in the direction of its longitudinal axis (01) is defined between the corrugated metal strip (2) and the metal support flat strip (3), characterized in that, louvers (24) are formed in the corrugation leg portions (21) of the corrugated metal strip (2), and the louvers (24) comprise a series of pairs (25) of flaps (26) cut in the surfaces of the corrugation leg portions (21) and defining a series of connecting holes (27) in the corrugation leg portions (21), wherein in each flap (26) pair (25) the flaps (26) are bent relative to the corrugation leg portion (21) on opposite sides of the corrugation leg portion (21) and oriented oppositely relative to each other in the circumferential direction.

Dependencies are inferred from the claim text.